Examples of org.hornetq.core.paging.cursor.PagedReference

org.hornetq.core.paging.cursor.PagedReference
A PagedReference @author clebert

         if (pageIterator != null)
         {
            // System.out.println("QueueMemorySize before depage = " + queueMemorySize.get());
            while (pageIterator.hasNext())
            {
               PagedReference reference = pageIterator.next();
               pageIterator.remove();
   
               if (filter == null || filter.match(reference.getMessage()))
               {
                  count++;
                  pageSubscription.ack(reference);
               }
               else

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      int depaged = 0;
      while (timeout > System.currentTimeMillis() && queueMemorySize.get() < maxSize && pageIterator.hasNext())
      {
         depaged++;
         PagedReference reference = pageIterator.next();
         if (isTrace)
         {
            log.trace("Depaging reference " + reference + " on queue " + this.getName());
         }
         addTail(reference, false);

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      public synchronized PagedReference next()
      {


         if (cachedNext != null)
         {
            PagedReference retPos = cachedNext;
            cachedNext = null;
            return retPos;
         }


         try

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      {
         synchronized (PageSubscriptionImpl.this)
         {
            boolean match = false;


            PagedReference message = null;


            PagePosition lastPosition = position;
            PagePosition tmpPosition = position;


            do
            {
               synchronized (redeliveries)
               {
                  PagePosition redelivery = redeliveries.poll();


                  if (redelivery != null)
                  {
                     // There's a redelivery pending, we will get it out of that pool instead
                     isredelivery = true;
                     PagedReference redeliveredMsg = getReference(redelivery);
                     lastRedelivery = redeliveredMsg;


                     return redeliveredMsg;
                  }
                  else

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      int numberOfPages = addMessages(NUM_MESSAGES, 1024 * 1024);


      System.out.println("NumberOfPages = " + numberOfPages);


      PagedReference msg;


      LinkedListIterator<PagedReference> iterator = cursor.iterator();
      int key = 0;
      while ((msg = iterator.next()) != null)
      {
         assertEquals(key++, msg.getMessage().getIntProperty("key").intValue());
         cursor.confirmPosition(msg.getPosition());
      }
      assertEquals(NUM_MESSAGES, key);


      server.getStorageManager().waitOnOperations();

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      System.out.println("NumberOfPages = " + numberOfPages);


      queue.getPageSubscription().close();


      PagedReference msg;


      LinkedListIterator<PagedReference> iteratorEven = cursorEven.iterator();


      LinkedListIterator<PagedReference> iteratorOdd = cursorOdd.iterator();


      int key = 0;
      while ((msg = iteratorEven.next()) != null)
      {
         System.out.println("Received" + msg);
         assertEquals(key, msg.getMessage().getIntProperty("key").intValue());
         assertTrue(msg.getMessage().getBooleanProperty("even").booleanValue());
         key += 2;
         cursorEven.confirmPosition(msg.getPosition());
      }
      assertEquals(NUM_MESSAGES, key);


      key = 1;
      while ((msg = iteratorOdd.next()) != null)
      {
         assertEquals(key, msg.getMessage().getIntProperty("key").intValue());
         assertFalse(msg.getMessage().getBooleanProperty("even").booleanValue());
         key += 2;
         cursorOdd.confirmPosition(msg.getPosition());
      }
      assertEquals(NUM_MESSAGES + 1, key);


      forceGC();

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      LinkedListIterator<PagedReference> iterator = cursor.iterator();


      for (int i = 0; i < 1000; i++)
      {
         System.out.println("Reading Msg : " + i);
         PagedReference msg = iterator.next();
         assertNotNull(msg);
         assertEquals(i, msg.getMessage().getIntProperty("key").intValue());


         if (i < firstPageSize)
         {
            cursor.ack(msg);
         }
      }
      cursorProvider.printDebug();


      server.getStorageManager().waitOnOperations();
      lookupPageStore(ADDRESS).flushExecutors();


      // needs to clear the context since we are using the same thread over two distinct servers
      // otherwise we will get the old executor on the factory
      OperationContextImpl.clearContext();


      server.stop();


      server.start();


      cursor = this.server.getPagingManager().getPageStore(ADDRESS).getCursorProvier().getSubscription(queue.getID());


      iterator = cursor.iterator();


      for (int i = firstPageSize; i < NUM_MESSAGES; i++)
      {
         System.out.println("Received " + i);
         PagedReference msg = iterator.next();
         assertNotNull(msg);
         assertEquals(i, msg.getMessage().getIntProperty("key").intValue());


         cursor.ack(msg);


         OperationContextImpl.getContext(null).waitCompletion();

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      System.out.println("Cursor: " + cursor);
      LinkedListIterator<PagedReference> iterator = cursor.iterator();
      for (int i = 0; i < 100; i++)
      {
         PagedReference msg = iterator.next();
         assertEquals(i, msg.getMessage().getIntProperty("key").intValue());
         if (i < 10 || i > 20)
         {
            cursor.ack(msg);
         }
      }
      
      server.getStorageManager().waitOnOperations();


      server.stop();


      OperationContextImpl.clearContext();


      server.start();


      cursor = this.server.getPagingManager().getPageStore(ADDRESS).getCursorProvier().getSubscription(queue.getID());
      iterator = cursor.iterator();


      for (int i = 10; i <= 20; i++)
      {
         PagedReference msg = iterator.next();
         assertEquals(i, msg.getMessage().getIntProperty("key").intValue());
         cursor.ack(msg);
      }


      for (int i = 100; i < NUM_MESSAGES; i++)
      {
         PagedReference msg = iterator.next();
         assertEquals(i, msg.getMessage().getIntProperty("key").intValue());
         cursor.ack(msg);
      }


      server.stop();
      createServer();

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      LinkedListIterator<PagedReference> iterator = cursor.iterator();


      for (int i = 0; i < 100; i++)
      {
         PagedReference msg = iterator.next();
         assertEquals(i, msg.getMessage().getIntProperty("key").intValue());
         if (i < 10 || i > 20)
         {
            cursor.ackTx(tx, msg);
         }
      }


      tx.commit();


      server.stop();


      OperationContextImpl.clearContext();


      server.start();


      cursor = this.server.getPagingManager().getPageStore(ADDRESS).getCursorProvier().getSubscription(queue.getID());


      tx = new TransactionImpl(server.getStorageManager(), 60 * 1000);
      iterator = cursor.iterator();


      for (int i = 10; i <= 20; i++)
      {
         PagedReference msg = iterator.next();
         assertEquals(i, msg.getMessage().getIntProperty("key").intValue());
         cursor.ackTx(tx, msg);
      }


      for (int i = 100; i < NUM_MESSAGES; i++)
      {
         PagedReference msg = iterator.next();
         assertEquals(i, msg.getMessage().getIntProperty("key").intValue());
         cursor.ackTx(tx, msg);
      }


      tx.commit();

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         msg.getBodyBuffer().writeBytes(buffer, 0, buffer.writerIndex());


         Assert.assertTrue(pageStore.page(msg, ctx, ctx.getContextListing(ADDRESS)));


         PagedReference readMessage = iterator.next();


         assertNotNull(readMessage);


         assertEquals(i, readMessage.getMessage().getIntProperty("key").intValue());


         assertNull(iterator.next());
      }


      OperationContextImpl.clearContext();
      
      ctx = generateCTX();


      pageStore = lookupPageStore(ADDRESS);


      cursor = this.server.getPagingManager().getPageStore(ADDRESS).getCursorProvier().getSubscription(queue.getID());
      iterator = cursor.iterator();


      for (int i = 0; i < NUM_MESSAGES * 2; i++)
      {
         if (i % 100 == 0)
            System.out.println("Paged " + i);


         if (i >= NUM_MESSAGES)
         {


            HornetQBuffer buffer = RandomUtil.randomBuffer(messageSize, i + 1l);


            ServerMessage msg = new ServerMessageImpl(i, buffer.writerIndex());
            msg.putIntProperty("key", i);


            msg.getBodyBuffer().writeBytes(buffer, 0, buffer.writerIndex());


            Assert.assertTrue(pageStore.page(msg, ctx, ctx.getContextListing(ADDRESS)));
         }


         PagedReference readMessage = iterator.next();


         assertNotNull(readMessage);


         assertEquals(i, readMessage.getMessage().getIntProperty("key").intValue());
      }


      OperationContextImpl.clearContext();


      pageStore = lookupPageStore(ADDRESS);


      cursor = this.server.getPagingManager().getPageStore(ADDRESS).getCursorProvier().getSubscription(queue.getID());
      iterator = cursor.iterator();


      for (int i = 0; i < NUM_MESSAGES * 3; i++)
      {
         if (i % 100 == 0)
            System.out.println("Paged " + i);


         if (i >= NUM_MESSAGES * 2 - 1)
         {


            HornetQBuffer buffer = RandomUtil.randomBuffer(messageSize, i + 1l);


            ServerMessage msg = new ServerMessageImpl(i, buffer.writerIndex());
            msg.putIntProperty("key", i + 1);


            msg.getBodyBuffer().writeBytes(buffer, 0, buffer.writerIndex());


            Assert.assertTrue(pageStore.page(msg, ctx, ctx.getContextListing(ADDRESS)));
         }


         PagedReference readMessage = iterator.next();


         assertNotNull(readMessage);


         cursor.ack(readMessage);


         assertEquals(i, readMessage.getMessage().getIntProperty("key").intValue());
      }


      PagedReference readMessage = iterator.next();


      assertEquals(NUM_MESSAGES * 3, readMessage.getMessage().getIntProperty("key").intValue());


      cursor.ack(readMessage);


      server.getStorageManager().waitOnOperations();

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Related Classes of org.hornetq.core.paging.cursor.PagedReference

org.hornetq.core.paging.cursor.impl.PageSubscriptionImpl$CursorIterator

org.hornetq.core.server.impl.QueueImpl

org.hornetq.tests.stress.paging.PageCursorStressTest

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